package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.constant.RedisConstant;
import com.atguigu.lease.common.exception.LeaseException;
import com.atguigu.lease.common.result.ResultCodeEnum;
import com.atguigu.lease.common.utils.JwtUtil;
import com.atguigu.lease.model.entity.SystemUser;
import com.atguigu.lease.model.enums.BaseStatus;
import com.atguigu.lease.web.admin.service.LoginService;
import com.atguigu.lease.web.admin.service.SystemUserService;
import com.atguigu.lease.web.admin.vo.login.CaptchaVo;
import com.atguigu.lease.web.admin.vo.login.LoginVo;
import com.atguigu.lease.web.admin.vo.system.user.SystemUserInfoVo;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.wf.captcha.SpecCaptcha;
import com.wf.captcha.base.Captcha;
import org.apache.commons.codec.digest.DigestUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;

import java.util.UUID;
import java.util.concurrent.TimeUnit;

@Service
public class LoginServiceImpl implements LoginService {
    @Autowired
    private StringRedisTemplate redisTemplate;
    @Autowired
    private SystemUserService systemUserService;

    @Override
    public CaptchaVo getCaptcha() {

        SpecCaptcha specCaptcha = new SpecCaptcha(130, 48, 4);
        specCaptcha.setCharType(Captcha.TYPE_DEFAULT);

        String code = specCaptcha.text().toLowerCase();
        String key = RedisConstant.ADMIN_LOGIN_PREFIX + UUID.randomUUID();
        String image = specCaptcha.toBase64();
        redisTemplate.opsForValue().set(key, code, RedisConstant.ADMIN_LOGIN_CAPTCHA_TTL_SEC, TimeUnit.SECONDS);

        return new CaptchaVo(image, key);
    }

    @Override
    public String login(LoginVo loginVo) {

        //验证码为空
        if (loginVo.getCaptchaCode() == null) {
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_NOT_FOUND);
        }

        //验证码校验
        String value = redisTemplate.opsForValue().get(loginVo.getCaptchaKey());
        if (value == null) {//验证码过期
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_EXPIRED);
        }
        if (!value.equals(loginVo.getCaptchaCode().toLowerCase())) {
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_ERROR);
        }
        SystemUser systemUser = systemUserService.getOne(new LambdaQueryWrapper<SystemUser>()
                .eq(SystemUser::getUsername, loginVo.getUsername()));
        //判断账号是否存在
        if (systemUser == null) {
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_NOT_EXIST_ERROR);
        }

        //4.校验用户是否被禁
        if (systemUser.getStatus() == BaseStatus.DISABLE) {
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_DISABLED_ERROR);
        }


        if (!systemUser.getPassword().equals(DigestUtils.md5Hex(loginVo.getPassword()))) {
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_ERROR);
        }

        return JwtUtil.createToken(systemUser.getId(), systemUser.getUsername());

    }

    @Override
    public SystemUserInfoVo getSystemUserInfoVo(Long id) {
        SystemUser systemUser = systemUserService.getById(id);
        SystemUserInfoVo systemUserInfoVo = new SystemUserInfoVo();
        systemUserInfoVo.setName(systemUser.getName());
        systemUserInfoVo.setAvatarUrl(systemUserInfoVo.getAvatarUrl());

        return systemUserInfoVo;
    }
}
